DE1668733A1 - Verfahren zur Synthese von Harnstoff unter Loesungskreislauf - Google Patents
Verfahren zur Synthese von Harnstoff unter LoesungskreislaufInfo
- Publication number
- DE1668733A1 DE1668733A1 DE19671668733 DE1668733A DE1668733A1 DE 1668733 A1 DE1668733 A1 DE 1668733A1 DE 19671668733 DE19671668733 DE 19671668733 DE 1668733 A DE1668733 A DE 1668733A DE 1668733 A1 DE1668733 A1 DE 1668733A1
- Authority
- DE
- Germany
- Prior art keywords
- urea
- ammonia
- water
- absorbate
- synthesis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims description 139
- 239000004202 carbamide Substances 0.000 title claims description 139
- 230000015572 biosynthetic process Effects 0.000 title claims description 86
- 238000003786 synthesis reaction Methods 0.000 title claims description 83
- 238000000034 method Methods 0.000 title claims description 51
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 154
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 118
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 76
- 229910001868 water Inorganic materials 0.000 claims description 72
- 229910021529 ammonia Inorganic materials 0.000 claims description 67
- 238000004821 distillation Methods 0.000 claims description 65
- 239000001569 carbon dioxide Substances 0.000 claims description 59
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 59
- 238000010521 absorption reaction Methods 0.000 claims description 52
- 239000002250 absorbent Substances 0.000 claims description 29
- 230000002745 absorbent Effects 0.000 claims description 29
- 239000008246 gaseous mixture Substances 0.000 claims description 28
- 239000012452 mother liquor Substances 0.000 claims description 27
- 239000000203 mixture Substances 0.000 claims description 25
- 210000002700 urine Anatomy 0.000 claims description 14
- 239000006096 absorbing agent Substances 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 230000002485 urinary effect Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 claims description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims 1
- 101100004031 Mus musculus Aven gene Proteins 0.000 claims 1
- 241001122767 Theaceae Species 0.000 claims 1
- 238000009825 accumulation Methods 0.000 claims 1
- 229910052791 calcium Inorganic materials 0.000 claims 1
- 239000011575 calcium Substances 0.000 claims 1
- 239000013043 chemical agent Substances 0.000 claims 1
- 238000002425 crystallisation Methods 0.000 claims 1
- 230000008025 crystallization Effects 0.000 claims 1
- 238000002156 mixing Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 claims 1
- 239000004576 sand Substances 0.000 claims 1
- 241000894007 species Species 0.000 claims 1
- 239000007858 starting material Substances 0.000 claims 1
- 235000013877 carbamide Nutrition 0.000 description 132
- 239000000243 solution Substances 0.000 description 28
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 description 18
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 14
- 235000011114 ammonium hydroxide Nutrition 0.000 description 13
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 11
- 239000013078 crystal Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 3
- GPWDPLKISXZVIE-UHFFFAOYSA-N cyclo[18]carbon Chemical compound C1#CC#CC#CC#CC#CC#CC#CC#CC#C1 GPWDPLKISXZVIE-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-IGMARMGPSA-N Carbon-12 Chemical compound [12C] OKTJSMMVPCPJKN-IGMARMGPSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000010437 gem Substances 0.000 description 2
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000003672 ureas Chemical class 0.000 description 2
- IJJWOSAXNHWBPR-HUBLWGQQSA-N 5-[(3as,4s,6ar)-2-oxo-1,3,3a,4,6,6a-hexahydrothieno[3,4-d]imidazol-4-yl]-n-(6-hydrazinyl-6-oxohexyl)pentanamide Chemical compound N1C(=O)N[C@@H]2[C@H](CCCCC(=O)NCCCCCC(=O)NN)SC[C@@H]21 IJJWOSAXNHWBPR-HUBLWGQQSA-N 0.000 description 1
- 235000016068 Berberis vulgaris Nutrition 0.000 description 1
- 241000335053 Beta vulgaris Species 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical class [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 206010010071 Coma Diseases 0.000 description 1
- 241000448280 Elates Species 0.000 description 1
- 206010020772 Hypertension Diseases 0.000 description 1
- 241000270295 Serpentes Species 0.000 description 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 1
- 206010000210 abortion Diseases 0.000 description 1
- 231100000176 abortion Toxicity 0.000 description 1
- 239000002156 adsorbate Substances 0.000 description 1
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 210000001072 colon Anatomy 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/12—Separation of ammonia from gases and vapours
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
- C07C273/04—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds from carbon dioxide and ammonia
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Gas Separation By Absorption (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6722366 | 1966-10-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1668733A1 true DE1668733A1 (de) | 1972-03-16 |
Family
ID=13338682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19671668733 Pending DE1668733A1 (de) | 1966-10-14 | 1967-10-11 | Verfahren zur Synthese von Harnstoff unter Loesungskreislauf |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3506710A (enExample) |
| DE (1) | DE1668733A1 (enExample) |
| GB (1) | GB1148991A (enExample) |
| NL (1) | NL6713948A (enExample) |
| NO (1) | NO124031B (enExample) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2654883A1 (de) * | 1975-12-05 | 1977-06-16 | Mitsui Toatsu Chemicals | Verfahren zur gewinnung von nicht- umgesetzten materialien und waerme bei der harnstoffsynthese |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3668250A (en) * | 1969-08-19 | 1972-06-06 | Chemical Construction Corp | Urea synthesis process |
| US3759992A (en) * | 1970-06-29 | 1973-09-18 | I Mavrovic | Urea synthesis |
| JPS555977B2 (enExample) * | 1974-05-14 | 1980-02-12 | ||
| IT1014987B (it) * | 1974-06-12 | 1977-04-30 | Snam Progetti | Procedimento integrato urea am moniaca |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2694728A (en) * | 1952-07-11 | 1954-11-16 | American Cyanamid Co | Method of preparing urea |
| DE1248639B (enExample) * | 1959-07-03 | |||
| US3155723A (en) * | 1960-02-04 | 1964-11-03 | Chemical Construction Corp | Synthesis of urea and recovery of residual reactants |
| US3258486A (en) * | 1961-01-23 | 1966-06-28 | Chemical Construction Corp | Process for urea synthesis |
| US3281464A (en) * | 1961-09-08 | 1966-10-25 | Lummus Co | Urea purification with recovery of ammonia and carbon dioxide |
| US3200148A (en) * | 1962-08-29 | 1965-08-10 | Chemical Construction Corp | Urea synthesis process |
| NL302169A (enExample) * | 1962-12-24 | 1900-01-01 | ||
| US3305582A (en) * | 1963-09-11 | 1967-02-21 | Chemical Construction Corp | Urea synthesis with recovery of excess ammonia |
-
1967
- 1967-10-10 US US674211A patent/US3506710A/en not_active Expired - Lifetime
- 1967-10-10 GB GB46215/67A patent/GB1148991A/en not_active Expired
- 1967-10-11 DE DE19671668733 patent/DE1668733A1/de active Pending
- 1967-10-13 NL NL6713948A patent/NL6713948A/xx unknown
- 1967-10-13 NO NO170124A patent/NO124031B/no unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2654883A1 (de) * | 1975-12-05 | 1977-06-16 | Mitsui Toatsu Chemicals | Verfahren zur gewinnung von nicht- umgesetzten materialien und waerme bei der harnstoffsynthese |
Also Published As
| Publication number | Publication date |
|---|---|
| NO124031B (enExample) | 1972-02-21 |
| GB1148991A (en) | 1969-04-16 |
| US3506710A (en) | 1970-04-14 |
| NL6713948A (enExample) | 1968-04-16 |
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